Research data and related information to the paper Asrat, Z. et al. 2023/24

Many mountain-restricted animal species, including Canis simensis, Tachyoryctes macrocephalus, Tragelaphus buxtoni, and Tragelaphus scriptus, can be found in the Ericaceous vegetation of the Bale Mountains, which is a biodiversity hotspot (Miehe and Miehe, 1994; Girma et al. 2018). Currently it's under pressure from a rising human population, it is characterized by fire-resistant woody trees or branched shrubs of Erica (Erica trimera and Erica arborea) (Wesche et al., 2000; Gil-Romera et al., 2019). We postulate that the current change in the distribution of Erica plants is due to anthropogenic disturbances rather than seed scarcity, in addition to the Erica distribution edge. In order to determine their effects on the composition of Ericaceous vegetation and the regeneration of soil seed banks, we collected data considering aspects, altitude, and disturbance of the environment. Our data includes list of plant species and corresponding families' , including growth habits and lifestyle. We identified species from stand vegetation and germination test plots, and our data contained plant cover, families, and related abundance data to show the major environmental constraints on Erica growth above tree-line. Along with the vegetation data, we ranked anthropogenic disturbance by site observation, and the study plots floor covers, altitude, and aspect are included for testing variability. For every site, the density of Erica seeds and the Erica cover are arranged in columns and tested for significant factor. Pleas read the journal article for more information.

栖息于山地的诸多受限动物物种，包括埃塞俄比亚狼（Canis simensis）、巨首鼹形鼠（Tachyoryctes macrocephalus）、山薮羚（Tragelaphus buxtoni）与薮羚（Tragelaphus scriptus），均可见于贝尔山脉（Bale Mountains）的杜鹃花科植被（Ericaceous vegetation）带——该区域属于全球生物多样性热点地区（biodiversity hotspot）（Miehe and Miehe, 1994; Girma et al. 2018）。该植被带当前正面临日益增长的人口带来的生存压力，其植被以欧石楠属（Erica）的耐火木本树木或分枝灌木为典型特征，涵盖四棱欧石楠（Erica trimera）与树状欧石楠（Erica arborea）（Wesche et al., 2000; Gil-Romera et al., 2019）。我们提出假设：除欧石楠属植物的分布边缘外，当前其分布格局的变化主要源于人为干扰，而非种子匮乏。为明确人为干扰对杜鹃花科植被组成与土壤种子库（soil seed banks）更新的影响，我们收集了涵盖坡向、海拔与环境干扰程度的相关数据。本数据集包含植物物种名录及其所属的科，同时涵盖各物种的生长习性与生活型信息。研究中我们通过样地植被调查与萌发试验样地完成物种鉴定，数据集同时包含植物盖度、科属信息及相关多度数据，用以揭示林木线（tree-line）以上欧石楠属植物生长的主要环境限制因子。除植被数据外，我们通过样地观测对人为干扰强度进行分级，同时纳入样地地表覆盖、海拔与坡向信息以检验数据变异性。每个样地的欧石楠种子密度与盖度均以列项形式呈现，并用于显著性因子检验。更多详细信息请参阅相关期刊论文。